Solution: Reset the password.
If you didnt get the mail and have already checked ur spam folder, contact StarScore or Pawned, you will need to be online on MC to verify that it is you.
We can then change to the correct email or change your password.​

My birthday date in the profile is all wrong.

Solution: Only way to change it is to inform StarScore or Pawned. ​

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I get User not premium while trying to connect to the Minecraft server

Solution: Buy the game, user not premium would imply that you have not bought the game.​